Mechanical movement.



C. PAULL MECHANICAL MOVEMENT APPLICATION FILED our. 4. 1916.

Patented. Jan. 8,1918.

invemior:

Cari Pauli.

fly A V pare-an STATES PATENT enema.

CARL PAULI, OF'SOUND BEACH, CONNECTICUT, ASSIGNOR T0 GARW OOD COMPANY, OF GARWOOD, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

. Patented Jan. 8, 1918.

Application'filed October 4, 1916. Serial No. 123,614.

To all whom it may concern.-

Be it known that I, CARL PAULI, a citizen of the United States, residing in Sound Beach, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

This invention relates to a mechanical movement in general, such as illustrated in my copending'applications Serial No. 51187, filed September 17, 1915, and Serial No. 123,615, filed October'4lth,1916 and more specifically to centrifugal'hammers. The subject-matter formingthe basic features of'the present specification have been divided out of the aforesaid application, S. No. 51187.

The present invention particularly contemplates the provision of a centrifugal hammer which is both anchored and guided by a guiding member surrounding said centrifugal hammer.

The present invention further contemplates structural features which particularly adapts the same for use on percussion drills, such'as rock drills or dental plugge'rs.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of specific embodiments thereof, illustrated in the accompanying drawings in which Figure 1 is an end elevation of one embodiment,

Fig. 2 is a side elevation, with a portion removed, of the embodiment illustrated in Fig. 1.

Fig. 3 is a perspective of the embodiment illustrated in Figs. 1 and 2, with the hammer, tool holder and covering member removed.

Fig. l is a side elevational view similar to that illustrated in Fig. 2, of another embodiment.

In the embodiment illustrated in Figs. 1, 2 and 3, there is provided a rotatable shaft 10, which may be driven by any suitable source of power, and which has secured at one end thereof a housing member 11 comprising a disk portion 12 and a crescentshaped member 13 extending laterally therefrom. The disk portion 12, as clearly illustrated in Figs. 2 and 3, is cut away at one side. The fiat side 14 formed'by this cut away portion extends from one horn 15 of the crescent-shaped member to its other horn 15.

Inside of the crescent-shaped portion 13 is disposed the hammer 16 which is a freely floating member and illustrated as a solid cylindrical portion in the present instance. The distance between the horns 15, 15, is less than the diameter of the internal periphery of the crescent-shaped member 13, and also less than the diameter of the cylindrical hammer 16. The cylindrical hammer 16, when assembled for operation, is slid laterally inside of the crescent-shaped member 13. From the foregoing it'will be seen that the crescent-shaped member 13 serves not only to guide but also to anchor the hammer in operative position. For preventing'the lateral displacement of the hammer 16, the disk member 17'is secured to the crescent-shaped member 13 by means of the screwslS, the outer periphery of such disk conforming to and aliuing with the disk portion 12.

The relative dimensions of the hammer 16 andhousing 11 are such that the hammer 16 may project from between the horns 15, 15, to a distance beyond the outer periphery of the housing 11.

When the foregoing arrangement is used for drilling purposes, the tool holder 19 may be provided with its hammer engaging end 20 disposed in the path of movement of that portion of the hammer 16 which projects beyond the housing 11, as aforesaid.

The embodiment illustrated in Fig. 4, comprises shaft 10, housing 11 embracing a disk portion 12 and crescent-shaped member 13, hammer 16 disposed inside of the crescent-shaped member 13, and tool holder 19', all substantially identical with the parts bearing like reference characters not primed in Figs. 1, 2 and 3. In the present embodiment there is provided a recess 21 in the bottom or trough of the crescent-shaped member 13', in which there is disposed a flat spring 22 which engages the hammer 16 to flexibly maintain the hammer 16 in its projecting position. i

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention.

I claim v 1. The combination with a cylindrical hammer-member in the form of a flat-disk, of a guiding-member housing adapted to loosely retain said cylindrical hammer-member therein by apartially peripheral wall only; and a shaft for circumferentially rotating the guiding-member on its own axis,

said guiding-member housing loosely supporting the cylindrical hammer-member with its axis eccentric to the axis of the rotation of the shaft, which is parallel with the axis of the cylindrical hammer-memher; and the housing guiding-member being provided with a peripheral opening allowing a portion of the periphery of the cylindrical hammer-member to project therethrough.

2. The combination with a cylindrical hammer-member of a housing having an eccentric cylindrical bore open on one side and adapted to looselyrretain said hammer-mem- 7 Copies of this patent may be obtained for 4. The combination with a rotatable shaft,

of a hammer cylindrical in form; an eccentric for guiding said hammer; a disk member secured to said shaft from which said eccentric extends laterally; and a second disk member secured to said eccentric so that said disk members and eccentric will together form a housing having an opening in the periphery through which the hammer which is floatably mountedin such eccentric housing may projecta portion of its periphery therefrom. 1

5. The combination with a rotatable shaft, of a hammer cylindrical in form; an eccentric for guiding said hammer; a disk member secured to said shaft from which'said eccentric extends laterally; and a second disk member secured to said eccentric so that saiddisk members and eccentric will form a housing with one another in which the hammer is floatablymounted, the inner surface of the eccentric being cylindrical in form to envelop the cylindrical surface vof the hammer, the horns of said crescentshaped member being spaced a suflicient distance from one another to permit the hammer to project therefrom into strikingposition, and yet not suiflcient to permit the hammer to pass between said horns.

CARL PAUL II I Witnesses:

EDWIN P. JORDAN, KATHERINE A. WEED.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

